Analysis

  • max time kernel
    5s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/10/2024, 12:36

General

  • Target
    b1ffe0c923eb0aae30e8c3f7b21d9a80f41555d74008ce3632c7a07c541baa02N.exe
  • Size 2.0MB
  • Sample241026-pterfavgpq
  • SHA256 b1ffe0c923eb0aae30e8c3f7b21d9a80f41555d74008ce3632c7a07c541baa02
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • azorult

C2
  • http://0x21.in:8000/_az/

Extracted

Family
  • quasar

Version
  • 1.3.0.0

Botnet
  • EbayProfiles

C2
  • 5.8.88.191:443

  • sockartek.icu:443

Mutex
  • QSR_MUTEX_0kBRNrRz5TDLEQouI0

Attributes
  • encryption_key

    MWhG6wsClMX8aJM2CVXT

  • install_name

    winsock.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    win defender run

  • subdirectory

    SubDir

Signatures

  • Azorult

    An information stealer that was first discovered in 2016, targeting browsing history and passwords.

  • Azorult family
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 3 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 4 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b1ffe0c923eb0aae30e8c3f7b21d9a80f41555d74008ce3632c7a07c541baa02N.exe
    "C:\Users\Admin\AppData\Local\Temp\b1ffe0c923eb0aae30e8c3f7b21d9a80f41555d74008ce3632c7a07c541baa02N.exe"
    1⤵
    • Checks computer location settings
    • Enumerates connected drives
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4760
    • C:\Users\Admin\AppData\Local\Temp\vnc.exe
      "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4240
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k
        3⤵
          PID:380
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4240 -s 548
          3⤵
          • Program crash
          PID:2320
      • C:\Users\Admin\AppData\Local\Temp\windef.exe
        "C:\Users\Admin\AppData\Local\Temp\windef.exe"
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:852
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks" /create /tn "win defender run" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\windef.exe" /rl HIGHEST /f
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:1676
        • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
          "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
          3⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1192
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks" /create /tn "win defender run" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe" /rl HIGHEST /f
            4⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:856
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\NsTNGNzidYb7.bat" "
            4⤵
              PID:2884
              • C:\Windows\SysWOW64\chcp.com
                chcp 65001
                5⤵
                  PID:3868
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 10 localhost
                  5⤵
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:4284
                • C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe
                  "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe"
                  5⤵
                    PID:2464
                    • C:\Windows\SysWOW64\schtasks.exe
                      "schtasks" /create /tn "win defender run" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\winsock.exe" /rl HIGHEST /f
                      6⤵
                      • Scheduled Task/Job: Scheduled Task
                      PID:2796
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 1192 -s 1992
                  4⤵
                  • Program crash
                  PID:1376
            • C:\Users\Admin\AppData\Local\Temp\b1ffe0c923eb0aae30e8c3f7b21d9a80f41555d74008ce3632c7a07c541baa02N.exe
              "C:\Users\Admin\AppData\Local\Temp\b1ffe0c923eb0aae30e8c3f7b21d9a80f41555d74008ce3632c7a07c541baa02N.exe"
              2⤵
              • System Location Discovery: System Language Discovery
              PID:4896
            • C:\Windows\SysWOW64\schtasks.exe
              "C:\Windows\SysWOW64\schtasks.exe" /create /tn RtkAudioService64 /tr "C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe" /sc minute /mo 1 /F
              2⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:1392
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4240 -ip 4240
            1⤵
              PID:3812
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1192 -ip 1192
              1⤵
                PID:4704
              • C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                1⤵
                  PID:1072
                  • C:\Users\Admin\AppData\Local\Temp\vnc.exe
                    "C:\Users\Admin\AppData\Local\Temp\vnc.exe"
                    2⤵
                      PID:1140
                      • C:\Windows\system32\svchost.exe
                        C:\Windows\system32\svchost.exe -k
                        3⤵
                          PID:4564
                      • C:\Users\Admin\AppData\Local\Temp\windef.exe
                        "C:\Users\Admin\AppData\Local\Temp\windef.exe"
                        2⤵
                          PID:1388
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 1140 -ip 1140
                        1⤵
                          PID:396
                        • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                          "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                          1⤵
                            PID:1780
                          • C:\Windows\system32\dwm.exe
                            "dwm.exe"
                            1⤵
                              PID:940
                            • C:\Windows\system32\dwm.exe
                              "dwm.exe"
                              1⤵
                                PID:3608
                              • C:\Windows\system32\dwm.exe
                                "dwm.exe"
                                1⤵
                                  PID:4148
                                • C:\Windows\system32\dwm.exe
                                  "dwm.exe"
                                  1⤵
                                    PID:3148
                                  • C:\Windows\system32\dwm.exe
                                    "dwm.exe"
                                    1⤵
                                      PID:3456
                                    • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
                                      "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
                                      1⤵
                                        PID:4528

                                      Network

                                            MITRE ATT&CK Enterprise v15

                                            Replay Monitor

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                                            Downloads

                                            NsTNGNzidYb7.bat

                                            • Path C:\Users\Admin\AppData\Local\Temp\NsTNGNzidYb7.bat
                                            • Size 208B
                                            • SHA256 d12884fd78fb5014d49f116c48c52a36d5d8df0d890faa2c7dc2ca0d1cf0aa10
                                            • MD5 SHA1 SHA512

                                            vnc.exe

                                            • Path C:\Users\Admin\AppData\Local\Temp\vnc.exe
                                            • Size 405KB
                                            • SHA256 4e8a99cd33c9e5c747a3ce8f1a3e17824846f4a8f7cb0631aebd0815db2ce3a4
                                            • MD5 SHA1 SHA512 SSDEEP

                                            windef.exe

                                            • Path C:\Users\Admin\AppData\Local\Temp\windef.exe
                                            • Size 349KB
                                            • SHA256 7050608d53f80269df951d00883ed79815c060ce7678a76b5c3f6a2a985beea9
                                            • MD5 SHA1 SHA512 SSDEEP

                                            10-26-2024

                                            • Path C:\Users\Admin\AppData\Roaming\Logs\10-26-2024
                                            • Size 224B
                                            • SHA256 e02272463ab29de6be21527014e9aaa32644e89828d28bafc2b94aa8811e3566
                                            • MD5 SHA1 SHA512

                                            SystemPropertiesPerformance.exe

                                            • Path C:\Users\Admin\btpanui\SystemPropertiesPerformance.exe
                                            • Size 2.0MB
                                            • SHA256 1ac3f400f949dd64bc66fea78e8d156d3a4210eeffee9d314b92d137f30c0a40
                                            • MD5 SHA1 SHA512 SSDEEP

                                            memory/852-34-0x0000000004F80000-0x0000000005012000-memory.dmp

                                            memory/852-30-0x00000000004D0000-0x000000000052E000-memory.dmp

                                            memory/852-33-0x0000000005530000-0x0000000005AD4000-memory.dmp

                                            memory/852-35-0x0000000005020000-0x0000000005086000-memory.dmp

                                            memory/852-36-0x00000000054A0000-0x00000000054B2000-memory.dmp

                                            memory/852-37-0x00000000061A0000-0x00000000061DC000-memory.dmp

                                            memory/852-29-0x0000000072E8E000-0x0000000072E8F000-memory.dmp

                                            memory/1192-45-0x0000000006D10000-0x0000000006D1A000-memory.dmp

                                            memory/4760-19-0x00000000045F0000-0x00000000045F1000-memory.dmp

                                            memory/4896-28-0x0000000000A20000-0x0000000000A40000-memory.dmp

                                            memory/4896-20-0x0000000000A20000-0x0000000000A40000-memory.dmp